com.netflix.config.sources

Class URLConfigurationSource

java.lang.Object

com.netflix.config.sources.URLConfigurationSource

All Implemented Interfaces:

PolledConfigurationSource

public class URLConfigurationSource
extends Object
implements PolledConfigurationSource

A polled configuration source based on a set of URLs. For each poll, it always returns the complete union of properties defined in all files. If one property is defined in more than one URL, the value in file later on the list will override the value in the previous one. The content of the URL should conform to the properties file format.

Author:

awang

Field Summary

Fields

Modifier and Type	Field and Description
static String	CONFIG_URL System property name to define a set of URLs to be used by the default constructor.
static String	DEFAULT_CONFIG_FILE_FROM_CLASSPATH
static String	DEFAULT_CONFIG_FILE_NAME Default configuration file name to be used by default constructor.

Constructor Summary

Constructors

Constructor and Description
URLConfigurationSource() Create the instance for the default list of URLs, which is composed by the following order A configuration file (default name to be config.properties, see DEFAULT_CONFIG_FILE_NAME) on the classpath A list of URLs defined by system property "archaius.configurationSource.additionalUrls" with values separated by comma ",".
URLConfigurationSource(String... urls) Create an instance with a list URLs to be used.
URLConfigurationSource(URL... urls) Create an instance with a list URLs to be used.

Method Summary

Methods

Modifier and Type	Method and Description
List<URL>	getConfigUrls()
PollResult	poll(boolean initial, Object checkPoint) Retrieve the content of the property files.
String	toString()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

CONFIG_URL

public static final String CONFIG_URL

System property name to define a set of URLs to be used by the default constructor.

See Also:

Constant Field Values

DEFAULT_CONFIG_FILE_NAME

public static final String DEFAULT_CONFIG_FILE_NAME

Default configuration file name to be used by default constructor. This file should be on the classpath. The file name can be overridden by the value of system property configurationSource.defaultFileName

See Also:

Constant Field Values

DEFAULT_CONFIG_FILE_FROM_CLASSPATH

public static final String DEFAULT_CONFIG_FILE_FROM_CLASSPATH

Constructor Detail

URLConfigurationSource

public URLConfigurationSource(String... urls)

Create an instance with a list URLs to be used.

Parameters:

urls - list of URLs to be used

URLConfigurationSource

public URLConfigurationSource(URL... urls)

Create an instance with a list URLs to be used.

Parameters:

urls - list of URLs to be used

URLConfigurationSource

public URLConfigurationSource()

Create the instance for the default list of URLs, which is composed by the following order

• A configuration file (default name to be config.properties, see DEFAULT_CONFIG_FILE_NAME) on the classpath
• A list of URLs defined by system property "archaius.configurationSource.additionalUrls" with values separated by comma ",".

Method Detail

getConfigUrls

public List<URL> getConfigUrls()

poll

public PollResult poll(boolean initial,
              Object checkPoint)
                throws IOException

Retrieve the content of the property files. For each poll, it always returns the complete union of properties defined in all URLs. If one property is defined in content of more than one URL, the value in file later on the list will override the value in the previous one.

Specified by:

poll in interface PolledConfigurationSource

Parameters:

initial - this parameter is ignored by the implementation

checkPoint - this parameter is ignored by the implementation

Returns:

The content of the configuration which may be full or incremental.

Throws:

IOException - IOException occurred in file operation

toString

public String toString()

Overrides:

toString in class Object